铁道标准设计2017，Vol.61Issue(2)：78-83,84,7.DOI:10.13238/j.issn.1004-2954.2017.02.018
深埋双线铁路隧道衬砌高水压分界值研究
Research on Boundary Value of High Hydraulic Pressure on Lining in Deep-lying Double-track Railway Tunnel
摘要
Abstract
In order to define the boundary value of high hydraulic pressure on the lining in deep-lying double-track railway tunnel and the stress state of the lining subject to high hydraulic pressure, the change rules of tunnel lining safety factors of double-track railway tunnel lining subject to different water pressure are calculated and analyzed with the finite element software based on the standard design drawings of the double-track railway tunnel, and the boundary value of high hydraulic pressure of the double-track railway tunnel lining is decided. The results show that when water pressure varies between 0 and 0. 05 MPa ( equivalent to about half of the height of the tunnel ) under grade II and Ⅲ rock conditions and when water pressure varies between 0 and 0. 1 MPa ( approximately equal to the tunnel clear height ) under grade Ⅳ and Ⅴ rock conditions, the safety factor of tunnel section is almost invariant. Under grade II and Ⅲ rock conditions, the first boundary value of high hydraulic pressure is 0. 08~ 0. 20 MPa, and the second boundary value is 0. 40 MPa. Under grade V and IV rock conditions, the first boundary value of high hydraulic pressure is 0. 12~0. 35 MPa, and the second boundary value is 0. 50 MPa. When the double-track railway tunnel is designed with the standard design drawings, the maximum static water head it can bear is 50 m. However, the cross section should be optimized if the static head is higher than 50 m.关键词
双线铁路隧道/衬砌/受力状态/安全系数/高水压分界值Key words
Double-track railway tunnel/Lining/Stress state/Safety factor/Boundary value of high hydraulic pressure分类
交通工程引用本文复制引用
王志杰,赵启超,刘若愚,何晟亚,周平..深埋双线铁路隧道衬砌高水压分界值研究[J].铁道标准设计,2017,61(2):78-83,84,7.基金项目
中央高校基本科研业务费专题项目(SWJTU11ZT33) （SWJTU11ZT33）
铁道部科技研究开发计划重大课题(2009. GD20-B) （2009. GD20-B）
交通运输部西部科技项目(2013318J13340) （2013318J13340）
